I have a 2006 Passat (probably the same as the 2007) and some change (2 quaters) made my drawer get stuck in the closed position and I was unable to use it.
The following link has detailed...
as far as getting the stereo out, you need to buy "keys" that slide in vertically on each side of the stereo. you can get the "keys" on eBay at a reasonable price. im not sure what the wiring is like...